company

THE ADVANTAGES


THE ELISA TECHNOLOGY OFFERS SIGNIFICANT ADVANTAGES WITH RESPECT TO EXISTING BOTTOM FIXED SOLUTIONS FOR OFF-SHORE WIND:




ECONOMIC HIGH CAPACITY SOLUTION FOR LARGE WIND TURBINES AND INCREASED WATER DEPTHS.

AVOIDANCE OF EXPENSIVE AND SCARCE HEAVY LIFT OR TRANSPORTATION VESSELS DURING THE COMPLETE TURBINE INSTALLATION PROCESS.

USE OF CONCRETE AS AN ECONOMIC PROVEN MATERIAL FOR ROBUST FIXED MARINE CONSTRUCTIONS, LEADING TO A DURABLE, FATIGUE TOLERANT AND MAINTENANCE-FREE STRUCTURE.

COST EFFICIENT SOLUTION WHICH MAXIMIZES LOCAL CONTENT AND REDUCES THE DEPENDENCE ON STEEL, A COMMODITY WITH HIGH PRICE VOLATILITY OFTEN RELATED TO BOTTLENECKS IN THE TOWER AND SUBSTRUCTURE SUPPLY CHAIN.

ROBUST DESIGN BASED ON ADVANCED STRUCTURAL, NAVAL AND GEOTECHNICAL STUDIES WITHIN A 3-YEAR DEVELOPMENT PROJECT INCLUDING SUCCESSFUL TANK TESTS, COMPLETE FATIGUE AND EXTREME LOAD TESTS FOR THE TELESCOPIC JOINT AND A FULL-SCALE TESTING TOWER, WITH THE SUPPORT OF TECHNOLOGICAL DEVELOPMENT INSTITUTIONS.

SUPPORTED BY EXTENSIVE AND EXCLUSIVE EXPERIENCE IN THE DESIGN, CERTIFICATION, MANUFACTURING AND ERECTION OF OVER 350 PRECAST CONCRETE WIND TOWERS AT AN INDUSTRIAL SCALE.

ONSHORE ASSEMBLY OF THE COMPLETE WIND TURBINE AND TOWER INTERNALS, REDUCING SEA RELATED COSTS AND RISKS.

SIMPLE AND ECONOMIC TRANSPORT BASED ONLY ON READILY AVAILABLE TUGBOATS, REDUCING DEPENDENCE ON THE DISTANCE FROM PORT TO SITE AND ENABLING PARALLEL TRANSPORTATION AND INSTALLATION OF MULTIPLE UNITS IN THE SAME WEATHER WINDOW.

REDUCED WEATHER SENSITIVITY OF THE TOWED TRANSPORT, THANKS TO THE HIGH NATURAL ROLLING PERIOD OF THE FLOATING STRUCTURE WHICH COMFORTABLY EXCEEDS TYPICAL ACTING WAVE PERIODS.

NO OVER-DIMENSIONING OF THE FOUNDATION FOR THE MOMENTARY BALLASTING OPERATION, ENSURING STABILITY BY MEANS OF SIMPLE AND REUSABLE AUXILIARY BUOYANCY ELEMENTS INSTEAD.

TOWER LIFT MEANS OF PROVEN "OUT-OF-THE-SHELF" HEAVY-LIFT STRAND JACKS AND GUIDING ELEMENTS. FULLY REUSABLE, THEIR COST PER TONNE LIFTING CAPACITY IS 3 ORDERS OF MAGNITUDE LOWER THAN THAT OF A MARINE CRANE REACHING 100M ABOVE SEA LEVEL.

FATIGUE TOLERANT PRESTRESSED HORIZONTAL JOINTS OF THE TELESCOPIC TOWER, WITH A SIMPLE, FAST AND RELIABLE EXECUTION PROCESS.

LARGE FOUNDATION BASE RESULTING IN LOW REQUIREMENTS FOR SOIL STIFFNESS AND BEARING CAPACITY.

REDUCED ENVIRONMENTAL EFFECTS, WITH LOW NOISE EMISSIONS (NO PILE-DRIVING), AND SIMPLE AND VESSEL-FREE COMPLETE DECOMMISSIONING THANKS TO A REVERSIBLE INSTALLATION PROCESS.

GREATER DURABILITY AND FATIGUE LIFETIME OFFER POTENTIAL TURBINE REPOWERING STRATEGIES FOR INCREASED SERVICE LIFE OF WIND FARMS AND THUS REDUCED COE.